Residents of Dimock, a small village in northern Pennsylvania, are set for a legal battle to restore their water supply after an oil and gas company blamed for polluting wells stopped trucking in fresh water last week.
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Bill Wolff, executive producer for the Rachel Maddow Show, shares a preview of tonight's show - Newt Gingrich pulls ahead in the Republican presidential candidate polls, plus a fracking chemical is found in a Wyoming water supply, and an advisor to the mayor of Oakland, CA quits based on the behavio

One of Florida's largest counties will stop adding fluoride to the water supply before the end of the year, commissioners announced this week, in a move that some opponents say was influenced more by tea party propaganda than it was by health or financial considerations.
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The Mississippi River city long pilloried for refusing to build a flood wall is finally getting one to safeguard its water supply, but delays mean the structure will not be in place for possible flooding this spring.
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Reassurances from Japanese officials that radiation in Tokyo's water supply had returned to safe levels on Thursday did little to assuage the fears of anxious parents. NBC's Chief Science Correspondent Robert Bazell reports.

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